analemma A stretched figure-eight curve obtained if solar declination is plotted against the equation of time throughout a whole year. Often found on sundials and globes, analemmas were originally used to calculate standard clock time from the apparent time as indicated by the position of the Sun. The Mars analogue to the terrestrial analemma has a teardrop shape. Related category • CELESTIAL MECHANICS Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |